SWAGELOK SS-18RS8-BKP Needle Valve 316 5000PSI 100F

( Brand: Swagelok ), ( Manufacturer Part Number: SS-18RS8-BKP ), ( Part Type: Valve ), ( Country Of Origin: United States )

Review SWAGELOK 316 Stainless Needle Valve 5000psi Made In The Usa

The **Swagelok SS-18RS8-BKP 316 Stainless Steel Needle Valve (Part #SS-18RS8-BKP)** is a precision-engineered, high-performance flow control device designed for demanding industrial, laboratory, and process applications where reliability, durability, and corrosion resistance are paramount. Crafted from **316 stainless steel (SS-316)**, this valve is built to withstand extreme conditions, making it ideal for use in aggressive chemical environments, high-pressure systems, and environments where contamination or material degradation must be avoided. The **18mm (3/4") nominal size** provides a balanced flow capacity, accommodating moderate to high flow rates while maintaining precise control, whether throttling gases, liquids, or slurries. With a **maximum working pressure of 5000 psi (344.7 bar)** and a **temperature range of -100 F to 800 F (-73 C to 427 C)**, this valve excels in both cryogenic and high-temperature applications, ensuring consistent performance across a vast operational spectrum.

The **RS8 series** design incorporates a **right-hand thread (R) with a 18mm female connection (SS)** on one end and a **back pressure port (BKP)** on the other, allowing for versatile integration into piping systems where back pressure monitoring or secondary connections are required. The **needle valve mechanism** features a **precision-ground stainless steel needle and seat**, delivering smooth, leak-tight throttling with minimal pressure drop, even at high flow rates. The **handwheel-driven operation** ensures manual control without the need for additional tools, making it user-friendly for maintenance and adjustments in the field. Additionally, the **SS-316 construction** provides exceptional resistance to corrosion, oxidation, and scaling, making it suitable for handling corrosive media such as acids, alkalis, and saline solutions without compromising structural integrity.

Beyond its robust performance, this valve is engineered for **long-term reliability**, with **Swagelok s proprietary sealing technology** ensuring a consistent, repeatable seal that resists leakage over extended use. The **back pressure port** enhances functionality by allowing for pressure monitoring or the attachment of gauges, sensors, or secondary fittings, making it a versatile component in complex systems. Whether deployed in **semiconductor manufacturing, pharmaceutical processing, oil and gas extraction, or laboratory research**, this needle valve delivers the precision, durability, and corrosion resistance required to maintain system efficiency and safety. Its **compact yet sturdy design** ensures easy installation in tight spaces, while its **universal compatibility** with Swagelok s extensive line of fittings and tubing systems simplifies integration into existing infrastructure. For applications demanding uncompromising performance in harsh environments, the **Swagelok SS-18RS8-BKP 316 Stainless Steel Needle Valve** stands as a dependable solution, combining engineering excellence with operational versatility.

### Pros and Cons of buying a Swagelok SS-18RS8-BKP (316 Stainless Steel Needle Valve, 5000 PSI, 100 F)

1. **High Pressure Rating (5000 PSI)** Ideal for industrial, laboratory, or high-pressure applications where standard valves would fail. This makes it suitable for gas chromatography, high-pressure testing, or specialized fluid handling systems.

2. **Stainless Steel Construction (316 Grade)** Offers excellent corrosion resistance, making it durable in harsh environments, including exposure to chemicals, moisture, or extreme temperatures. 316 stainless steel is also resistant to pitting and crevice corrosion, which is critical for long-term reliability.

3. **Precision Engineering** Swagelok is a well-known brand for high-quality, precision-engineered fittings and valves. The needle valve design allows for fine control over flow rates, which is essential in applications requiring metering or throttling.

4. **Compatibility with Swagelok System** Since it is part of Swagelok s modular system, it integrates seamlessly with other Swagelok fittings, tubing, and connectors, reducing the risk of leaks and ensuring a consistent system performance.

5. **Temperature Resistance (100 F Rating)** While the 100 F rating might seem low, this valve is likely designed for general-purpose use where extreme heat is not a primary concern. However, Swagelok valves are often rated for much higher temperatures in other configurations, so this may be a conservative specification for this particular model.

6. **Black Phenolic Handle** The BKP designation indicates a black phenolic handle, which is durable and provides a better grip compared to some plastic alternatives, improving usability in demanding environments.

7. **Reliability and Longevity** Swagelok products are built to last, with minimal maintenance requirements over time. This reduces downtime and replacement costs in industrial or research settings.

8. **Versatility** Can be used in a variety of applications, including gas delivery systems, liquid chromatography, pilot plants, or any setup requiring precise flow control under high pressure.

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1. **Limited Temperature Rating (100 F)** The 100 F maximum temperature rating is relatively low compared to other Swagelok valves designed for higher temperatures (e.g., some models support up to 400 F or more). If your application involves elevated temperatures, this valve may not be suitable without risking performance degradation or failure.

2. **Potential Overkill for Low-Pressure Applications** If your system rarely operates near 5000 PSI, purchasing a valve rated for such extreme pressure may be unnecessary, leading to higher upfront costs without proportional benefits.

3. **Cost** Swagelok valves are premium-priced due to their quality and precision. For applications where budget is a constraint, alternatives from other brands (e.g., Parker, Valco, or generic stainless steel valves) might be considered, though with potential trade-offs in reliability or compatibility.

4. **Specialized Knowledge Required** Swagelok systems require proper installation, including correct torque specifications and sealing techniques (e.g., using Swagelok s proprietary ferrules). Improper installation can lead to leaks or damage, which may not be an issue with simpler valves.

5. **Maintenance and Spare Parts** While Swagelok valves are durable, parts like seals, ferrules, or handles may need replacement over time. Ensuring availability of genuine Swagelok replacements can be more expensive than generic alternatives.

6. **Size and Bulk** The valve s robust construction means it may be larger and heavier than smaller, lower-pressure valves, which could be a consideration in space-constrained applications.

7. **Potential for Over-Tightening** Due to its high-pressure rating, users might be tempted to overtighten the valve or fittings, risking damage to the threads or seals. This requires careful handling and adherence to Swagelok s torque specifications.

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The **Swagelok SS-18RS8-BKP (316 stainless steel, 5000 PSI, 100 F)** is an excellent choice for applications requiring **high-pressure precision, corrosion resistance, and long-term reliability**. Its stainless steel construction and compatibility with Swagelok s ecosystem make it ideal for industrial, laboratory, or specialized fluid handling systems where performance and durability are critical. However, its **limited temperature rating and premium cost** may make it less suitable for applications with lower pressure demands or higher temperature requirements.

If your application involves **high-pressure environments (close to 5000 PSI), exposure to corrosive substances, or requires fine flow control**, this valve is a strong recommendation. Conversely, if your system operates at much lower pressures or higher temperatures, or if budget is a significant constraint, you may want to explore alternatives or verify whether the 100 F rating is a strict limitation for your use case.

- You need a **high-pressure (5000 PSI) valve** for an industrial or laboratory setting.

- Corrosion resistance (316 stainless steel) is essential for your application.

- You are already using Swagelok fittings and want seamless integration.

- Your system s temperature requirements do not exceed 100 F (or you can confirm compatibility with the valve s operating conditions).

- Your application operates at **much lower pressures** (e.g., below 1000 PSI), where a lower-rated valve would suffice.

- Your system involves **higher temperatures** (above 100 F), and you need a valve with a broader temperature range.

- Budget is a limiting factor, and you are open to exploring other brands with similar performance characteristics.

- You lack experience with Swagelok systems and are concerned about installation complexity.

For most **high-pressure, corrosion-resistant applications**, this valve is a reliable and high-quality investment. Always verify the specific operating conditions of your system to ensure the valve s specifications align with your needs.

Details:

GSR veers 486 GS 6.5.1 486 , GSR 837 7.0.15 837 Sold as shown. This item was working inventory at a large semi-conductor manufacturer and is sold as. Applied Materials, Canon, DNS, Ebro, Edwards, ENI, Masonic's, KLA-Tenor, LAM, Nikon, Novellas, Parametric, SVG, TEL, Variant, ASM, ASML, Millipede, Swagelok, CKD, SMC and more. FUJIKIN KE68T000 Needle Valve Swagelok VCR Metal Gasket Fittings 316L SS JAPAN.

Many are new in original packaging or from fab working inventory storage bins removed machines never put into production, lightly used hard to replace custom specific parts. Sold as shown, SWAGELOK SS-18RS8-BKP 316 Stainless SS Needle Valve 5000PSI 100F Made in the USA.

part #: ss18rs8 prices

• $115.00-$199.95

specifications valvesplumbing:

• brand: Swagelok
• mpn: Ss-18rs8-bkp
• part type: Valve
• country of origin: United States

payments valvesplumbing:

• other
• credit card: Discover
• wallet: Google-pay

returns valvesplumbing:

• policy: No Returns

general valvesplumbing:

• Hydraulics, Pneumatics, Pumps Plumbing > Valves Manifolds > Other Valves Manifolds
• condition: Used

seller valvesplumbing:

• rating: 99.7%
• # reviews: 5219
• city: Boise, Idaho

shipping valvesplumbing:

• class: Standard
• service: USPS Ground Advantage
• transit: 4-9 Days
• cost: $6.35
• carrier: USPS
• type: Fixed

offer valvesplumbing:

• options: Ship-to-home
• quantity: 1
• sold: 0
• availability: In Stock
• started: April 23, 2026

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